            &\multicolumn{1}{c}{(1)}         &\multicolumn{1}{c}{(2)}         &\multicolumn{1}{c}{(3)}         &\multicolumn{1}{c}{(4)}         &\multicolumn{1}{c}{(5)}         &\multicolumn{1}{c}{(6)}         \\
\midrule
p\_air\_incident&       0.523\sym{***}&       0.523\sym{***}&       0.523\sym{***}&       0.520\sym{***}&       0.502\sym{***}&       0.507\sym{***}\\
            &   (0.00946)         &   (0.00946)         &   (0.00946)         &   (0.00954)         &    (0.0110)         &    (0.0111)         \\
\addlinespace
p\_referred  &                     &     0.00408         &                     &                     &                     &                     \\
            &                     &    (0.0218)         &                     &                     &                     &                     \\
\addlinespace
p\_ee\_incident&                     &                     &      0.0432\sym{***}&      0.0413\sym{***}&      0.0351\sym{***}&      0.0309\sym{***}\\
            &                     &                     &   (0.00460)         &   (0.00460)         &   (0.00518)         &   (0.00530)         \\
\midrule
N           &     4158000         &     4158000         &     4158000         &     4012920         &     2949660         &     2753016         \\
r2          &      0.0199         &      0.0199         &      0.0200         &      0.0650         &      0.0747         &      0.0769         \\
ar2         &                     &                     &                     &                     &                     &                     \\
